want to know if this tranny would be ok to run behind a 383 stroker motor say 425 horse or are they junk it has fine 3-grove input shaft& uses a 400 turbo yoke numbers are 130406690 borg warner is stamped on side it was pulled out of a 69 camaro & shifted good i dont know what it orginaly came out of but i can get it for a couple hundred dollars is this a decent tranny thanks

I like the Borg Warner 4-speeds. I think it would suit you just fine. As with just about any factory stock manual transmission, slicks in combination with hard clutch dumps will break them eventually.
I have experience with an iron case Borg Warner T-10. It took all I could dish out on the street(my motor was around 400HP). I was very pleased with it.
Chris

As Chris stated the BW T-10 and ST-10's can be very good transmissions behind moderately built engines if built right and maintained properly.
The design is now owned by Richmond Corp. and is still manufactured.
Here is a link to a great site with lots of info on the ST-10 identification. It also contains some links to T-10 info and parts suppliers. (http://fiedlerh.home.att.net/BW.htm)
I would hazard a quess by your discription that you have a later Alum. case unit. 1969 Camaro's, or for that matter any 1967~69 Camaro, didn't come with T-10's as I'm sure you are aware by now.
The later ST-10's had larger output yokes and used the larger U-joint size.

Hope some of this helps - post back if you have any questions.

John